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weird behaviour with the offset points in curve node evaluated on spline and with sampled values #123971

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opened 2024-07-01 01:27:22 +02:00 by Shmuel Israel · 6 comments
Shmuel Israel commented 2024-07-01 01:27:22 +02:00
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System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2070 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 555.99

Blender Version
Broken: version: 4.3.0 Alpha, branch: main, commit date: 2024-06-05 19:23, hash: e114467a5463
Worked: (newest version of Blender that worked as expected)

Short description of error
The "offset points in curve" node gives unpredictable and inconsistent results when the offset input is a value sampled ("evaluate at index" node (or the "sample index" node, when the index is a field)), and when the output is evaluated on the spline domain.

Exact steps for others to reproduce the error
Create the setups below:

**System Information** Operating system: Windows-10-10.0.19045-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2070 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 555.99 **Blender Version** Broken: version: 4.3.0 Alpha, branch: main, commit date: 2024-06-05 19:23, hash: `e114467a5463` Worked: (newest version of Blender that worked as expected) **Short description of error** The "offset points in curve" node gives unpredictable and inconsistent results when the *offset* input is a value sampled ("evaluate at index" node (or the "sample index" node, when the index is a field)), and when the output is evaluated on the spline domain. **Exact steps for others to reproduce the error** Create the setups below: <video src="/attachments/1e4d9f6d-9e4c-4751-84cc-9e19df0c39ce" title="2024-06-30 19-00-34.mp4" controls></video> <video src="/attachments/8a0c4c5a-387a-4575-baaa-477be524199d" title="2024-06-30 19-22-46.mp4" controls></video>
Bug Test.blend
1.2 MiB
2024-06-30 19-22-46.mp4
849 KiB
2024-06-30 19-00-34.mp4
2.4 MiB
Shmuel Israel added the
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Iliya Katushenock commented 2024-07-01 11:26:56 +02:00
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I can not reproduce issue. Mainly due to random value node.
Please, add simple example file and describe certain cases that looks like bug.

I can not reproduce issue. Mainly due to random value node. Please, add simple example file and describe certain cases that looks like bug.
Iliya Katushenock added the
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 labels 2024-07-01 11:27:10 +02:00
Shmuel Israel commented 2024-07-01 19:58:59 +02:00
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I can not reproduce issue. Mainly due to random value node.
Please, add simple example file and describe certain cases that looks like bug.

I did add a simple example. see the second video

> I can not reproduce issue. Mainly due to random value node. > Please, add simple example file and describe certain cases that looks like bug. I did add a simple example. see the second video
Iliya Katushenock commented 2024-07-01 20:00:16 +02:00
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I mean .blend file.

I mean .blend file.
Shmuel Israel commented 2024-07-01 20:01:57 +02:00
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the result shouldn't change if I am sampling it or whether it's constant. (this is only an issue on the spline domain, remember. )

the result shouldn't change if I am sampling it or whether it's constant. (this is only an issue on the spline domain, remember. )
Shmuel Israel commented 2024-07-01 20:11:30 +02:00
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I mean .blend file.

okay, I'll do that later.

> I mean .blend file. okay, I'll do that later.
Shmuel Israel commented 2024-07-02 04:38:58 +02:00
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@mod_moder I added a .blend file.

@mod_moder I added a .blend file.
Iliya Katushenock self-assigned this 2024-07-02 12:44:10 +02:00
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Reference: blender/blender#123971
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